Replicad MCP Chatbot is a chatbot (you can plug in Claude, ChatGPT, etc. via API key) that could code in the replicad, a JavaScript library for building 3D models with code in the browser. The project was aimed at CAD beginners who could prompt an AI to help them with their designs (think Cursor for CAD modeling).
The MCP server was used for tool use (looking up replicad examples and documentation stored in LangGraph), and an evaluator-optimizer agent workflow was used to iterate on the generated code.
Watch a video demo of the chatbot in action!